Elevating pivot-fixture for windows.



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BLBVATING PIVGT FIXTURE POB. WINDOWS.

APPLICATION FILED AUG. 1, 190s.

1,001,322. Patented Aug. 22, 1911,

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ELBVATING PIVOT FIXTURE FOR WINDOWS. y

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ELBVATING PIVOT FIXTURE PoR WINDOWS.

APPLICATION FILED AUG. 1, 1908.

Patnted Aug. 22, 1911.

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G. D. TABOR.

BLEVATING PIVOT FIXTURE F011 WINDOWS.

APPLICATION FILED AUG. 1l 1908.

1,0o1l322. 11111111811 Aug. 22, 1911.

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UNTFD STATES FATFNT OFFICE.

CLINTON D. TABOR, OF NEW DORP, NEW YORK, ASSIGNOR TO TABOR SASH COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ELEVATING PIVOT-FIXTUBE FOR WINDOWS.

Specification of Letters Patent.

Application filed August 1, 1908.

Patented Aug. 22, 1911.

Serial No. 446,417.

To all whom 'it may concern:

Be it known that T, Cm'N'lox D. Timon, a citizen oit the United States, and resident of New Dorp, in the county ot" Richmond and State oit' New York, have invented a new and Useful Improvement in ,lllevating Pivot-l4`ixtii1es it'or Windows, ot' which the t'ollowing is a specitication.

This invention relates to an elevating pivot :fixture which is more particularly designed for windows in which the sash is pivotcd centrally at its upper and lower ends in the trame. In windows ol this character the sash is movable vertically and the opposing lower parts oit the sash and frame are provided with a cooperating rib and groove which engage with each other in the lowered position ot the sash but which are disengaged in the raised position ot the same and thus permit the latter to be swung horizontally into its opened and closed position.

The object of this invention is to produce an elevating pivot fixture for connecting` the lower parts ot the sash and 'trame which is comparatively simple in construction, which enables the sash to be raised and lowered uniformly and with the minimum ot expcnditure of power, and which operates to hold the sash centrally in its lowered and elevated position.

ln the accompanying drawings consisting of 5 sheets: Figure l is a 'fragmentary vertical longitudinal section ot my improved elevating pivot `fixture taken in line 1--1, Fig. lt, and showing the parts in the position which they occupy when the sash is t'ullv lowered. Fig. 2 is a similar view talcen in line 2v2, Fig. 4t, and showing the position of the parts when the sash is partly elevated. Fig. 3 is a sectional view taken on the same lines as Fig. 2 but showing the parts in the position which they occupy when the sash is fully raised. Fig. t is a top plan View ot the elevating pivot fixture detached from the sash and frame. Fig. 5 is a horizontal section ot the same taken in line 5-5, Fig. 2. Figs. G and 7 are vertical transverse sections, taken in lines 6-6 and *aL-7, Figs. S and 9, respectively. Figs. 8 and 9 are fragmentary vertical longitudinal sections taken in lines .--8 and 9 9, Figs. (l and 7, respectively. Figs. l0, 11, 12, l2-, lt and l5 are perspective views oit dit- 'terent parts ot the elevating pivot fixture. Fig. 'lt is a top plan view ot a moditied construction ot my improved elevating pivot tixtnre. l `ig. '17 is a vertical longitudinal section thereof. in line 1T-17, Fig. 16. Figs. 1S and t9 are vertical transverse sections taken in .lines lS--JIS and '1Q- 19. Fig. 17.

Similar letters o't re'tcrence indicate corresponding parts through the several views.

A represents the horizontal lower member or sill ot the. window 'trame and ll the horizontal lower bar ot the window sash. The sash is pivoted centraliV at its upper and lower endsI in the :t1-amc so as to be capable ot turning horizontally in the same and also sliding vertically therein, similar to the sash shown in a tormer window fixture invented h v in vselt and patented February QS, 1005, No. 7953.555. l'n windows of this character a tight joint is produced between the lower bar ot the sash and the sill ot the 'trame by means ot a longitlulinal rib n. arranged on top ot the sill and a longitiulinal groove arranged on the underside of the sash bar, said rib and groove being engaged with each other upon lowering the sash when the same are in line and said groove and rib being disengaged by raising the sash so as to permit ot turning the latter horizontallyr into an opened or closed position.

My improved elevating pivot fixture which connects the lower bar ot the sash and the sill ol' the iframe is constructed as follows: (l represents a trame 'tace plate secured lengthwise in a recess in the upper side ot the sill at the center thereo't and provided centrally with a circular step bearing l) which opens upwardly, an oblong opening d extending diamctrically across said step bearing from the upper to the underside ot the sill plate, and longitudinal ribs c arranged on opposite sides ot the step bearing in line with the ribs ot the sill so as to practically 'torni extensions ot the latter. To the underside ot the sash bar is secured a sash face plate Fl which is provided with a longitudinal groove c forming an extension of the groove in the sash bar and adapted to receive the rib on the frame face plate in the lowered position of the sash. Arranged in a guide opening 7 formed centrally in the sash face plate is an upright pivot pin or post G the lower end g of which is circular or cylindrical and turns in the step bearing of the frame face plate while its upper part g1 is flat sided so as t0 fit the opening f in the sash plate, which is of corresponding form, and compel the sash plate and pivot pin to turn together but permitting the sash plate to slide vertically on the pivot pin independently of the latter. The underside of the pivot pin is provided with a depending neck H which has an elongated head 7L at its lower end. .This head may be passed through the elongated opening CZ of the frame plate after bringing the head and opening in line with each other and when the head reaches the underside of the frame plate and the same is turned together with the pivot pin then these parts are interlocked and prevented from becoming separated. The relative arrangement of the oblong opening and head of the frame plate and pivot pin is such that these parts can only be assembled or dismembered while the sash plate is arranged at right angles to the frame plate, thereby preventing the sash pivot pin from being raised while the sash is swung into its closed position in line with the frame.

1 represents an intermediate elbow shaped rock lever having a horizontal wrist or knuckle z', a lower rear or outer horizontal arm l projecting laterally from one end of the knuckle and an upright front arm 2 projecting upwardly from the opposite end of the knuckle. rEhe latter is journaled transversely in a bearing J formed between the underside of the sash face plate and a bearing plate j secured to the underside of the sash plate, as shown in Fig. 9. The lower outer arm of the elbow lever engages with a recess Z in the upper part of the pivot pin or post and its upper or inner arm is arranged within the front and rear walls M, N of a casing on the inner or fro-nt side of the lower sash bar. The rear wall N of this casing is preferably formed integrally with the bearing plate j which latter is arranged at one end thereof and at its opposite end the same is provided with a lug n which is secured to the underside of the sash face plate at the corresponding end thereof. rl`he front wall M of the casing has formed integrally therewith the side walls m, m and bottom m1 of this casing and is secured to the rear wall by means of screws o, 0, as shown in Figs. 5 and 18.

P represents a hand lever which has a sliding pivotal connection with the casing which is preferably effected by means of a horizontal transverse pivot pin p passing through the inner end of this lever and through vertical slots g, g1 arranged in the upper parts of the front and rear walls of the casing at a point transversely in line or nearly so with the pivot post. On one side and adjacent to its fulcrum the hand lever is connected by a link R with the upper end of the upright arm of the elbow lever. When the sash is in its lowered and closed position the hand lever projects substantially in a horizontal direction from the right of its pivot which at this time is at the upper end of the slots g, g1, the elbow lever .is turned with its upper arm towardy the right, and the pivotal connection between the link and the hand lever is arranged between the fulcrum of the hand lever and the pivotal connections between the link and t-he upper arm of the elbow lever, so that these three pivots are horizontally in line or on a dead center, as sho-wn in Fig. 1.' While in this position any attempt to raise the sash from the outside is prevented owing to the link and hand lever at this time ope-rating as a lock which prevents the elbow lever from turning and consequently renders it impossible to raise the sash by any power applied to the same directly from the interior or the eX- terior. lhen it is desired to elevate the sash the hand lever is turned upwardly and downwardly from its horizontal position at the right side of its pivot to a position in which it projects horizontally from the left side of its pivot. As the hand lever swings from its horizontal posit-ion at the right to its central position its pivot pin 7) gradually slides from the upper ends of the slots g, q1 of the casing, shown in Fig. 1, to lthe lower ends of the same, as shown in Figa 2, and upon completing the movement of this lever from its central position to a position in which it is arranged at the left of its pivot, the pin p slides from the lower ends of the slots g, Q1 to the upper ends thereof, as shown in Fig. 3. By this constant shifting of the pivot or fulcrum of the hand lever the pivotal connection between the latter and the link is maintained in the most favorable position relative to the elbow lever and link so as to obtain the greatest leverage from the beginning to the end of the stroke of this lever in moving from right to left, thereby enabling the sash to be raised with a minimum expenditure` of hand power.

When the hand lever reaches its extreme position toward the left its pivot is arranged horizontally in line with and between the pivotal lconnections of the link with the hand lever and elbow lever, as shown in Upon turning the hand level from lett to right the pivot thereof first slides downwardly from the position at the top ot the slots Q, ff' in the casing, as sllown ill Fig. 5l, to the bottom oit' these slots, as shown ill Fig. 2, and tllen rises again to the top ol these slots, as shown in Fig. l, thereby enabling the attendant to obtaill a .[Alowertul leverage during the elltire reverse lllovenlent oit the hand level' and permitting the sash to be lowered gradually and slowly alld avoiding the liability oit' the sash dropping suddenly which is particularly liable to occul' and very objectionable in case ot a very heavy sash.

The sliding pivot ot the hand levelI not only places the level' ill the most advantageous position throughout its raising and lowering movements but it also equalizes the power necessary 'for raising and lowering the sash, thereby avoidillg irregular action ot the device wllicll otherwise would occur if the hand lever turned abollt a fixed pivot. By thus locking the sash in its lowered and elevated positions as the pivot oit the hand level' reaches the dead cellter relatively to the link and lever, no sepal'atc locking devices are required it'or this purpose, thereby reducing the cost ot installing windows of this character.

In order to produce a finished appmlranec on the front side of the casing alld also to provide an additional support 'lor the pill p, the handle level' is provided witll a flange s which overhangs the upper part oit the :tront wall ol the casing and supports the pivot p in such manner tllat it conceals the front end oit' this pin and also a eonsiderallle part of the slot (l in the trent wall.

In the modified construction ot' my improved elevating pivot tixtnre the elbow lever I1 is pivotally supported by means ot' a horizontal pin T passing transversely through lugs t on the knuckle oit' tllis level' and through lugs t1 on the upper side of the sash plate, the pivot pin or post G1 is formed integrally with the frame plate CL and passes upwardly through a circular opening in the sash plate El and the rear lower arm of the elbow level' is bit'urcated and bears with thelower sides ott its branches or lingers u, a against an annular shoulder 'e formed on the upper part ot the pivot pin while the upper sides of these fingers engage with the underside of a cotter pill fw passing transversely through the upper end oi the pivot pin. This means ot connecting the elbow lever with the pivot pin permits the sash to turn relatively to the itranle but couples the lever with the pivot pin so that the sash cannet be raised nor lowered eX- cept. through the medium of the hand level' which operates in substantially the same manner as the construction first described.

I clailn as my invention:

1. An elevating pivot fixture tor windows comprising .tace plates adapted to be attached to the sash and iframe, respectively, one ot said platesl having a pivot pill wllicll arranged ill all opelling ill the other plate, all intermediate level' having olle arnl engaging said pivot pill, a hand level' having a nlovable itulerum, alld a link connecting said llalld level' witll the other arnl ot said intermediate level', the relative arrangement oi the parts being such that ill one position of. the lever its 'tflllcrl'lnl .is between pivotal connections ot the link with the hand lever alld with the intermediate level' alld inanother position the pivotal eollnectioll between the lillk and hand lever is arranged betwecll the tulerulll et' the hand leve' and the pivotal connection 0l the link with the intermediate level', said three pivotal connections being ill lille in each position ol. the hand lever.

2. All elevating pivot fixture :tor windows comprising tace plates adapted to be attaclled to the sash alld li'ranle, respectively, one of said plates having a pivot pill which is arranged in all opening in the other plate, all intermediate elbow .lever journaled on the plate with the opening alld engaging one o't' its arms with said pin, a. wall connected with the plate having said opening alld l'lrovided adjacent to said pin with a vertical slot, a llalld lever having its pivot slidable ill said slot, and a link connecting said hand lever with the otller arm ot said elbow lever, the relative arrangelllent: of the parts being sncll that in one position otthe lever its :tulcruln is between pivotal connections ot the link with the halld level' and with the intermediate lever and in another position the pivotal connection between the link and llalld lever is arranged between the tulcrunl o't the hand leve' and the pivotal connection oit the link with the intermediate lever, said three pivotal collnections being ill lille in each position o't the hand level'.

3. All elevating pivot fixture 'tor windows comprising `tace plates adapted to be attached to the sash and trame, respectively, one of said plates llavillg a `pivot pill wlliell is arranged ill an opening ill the other plate, a casing which :is connected with the plate having said opening and which is provided ill its 'liront and rear walls with vertical slots adjacent to said pivot pin, all intern'le diate elbow lever journalcd on the platel with said opening alld having one olf its arms engaging said pivot pin wllile its other al'ln is arranged ill said casing, a hand lever having its pivot slidable vertically ill said slots, and a link conncctillg said hand lever with the arm ot the elbow level' which is witllin said casing, the relative arrangement of the parts being such that in one position of the leverl its fulorum is between otal connections being in line in each posipivotal Connections of the link With the tion of the hand lever. l0 hand lever and with the intermediate lever lVtness my hand this 27th day of July, and in another position the pivotal eonnec- 1908.

tion between the link and hand level` is ar- CLNTON D. TABOR. ranged between the ulerum of the hand le- VJitnesseS:

vel` and the pivote-l connection of the link A. SCHRAFET,

withl the intermediate lever, said three piv- GEORGE RIPLEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

